The following text summarizes information provided in the video. In the human body, only the retina allows the examiner to achieve direct visualization of the central nervous system and the ...

To compare the levels of agreement and the survival rates of sealant retention for different sealing materials over a 2-year period assessed using the visual clinical examination and replica methods, ...

This contrivance has long been used in Boston, by Dr. Clarke, for the purpose of directing the sun's rays upon the ear. — Editors.

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...

Explore how digital exam systems are transforming education. Learn about digitized answer books, on-screen marking, and AI-based evaluation to meet rising student numbers with trust and accuracy.